vendor/api-platform/core/src/Doctrine/Common/State/LinksHandlerTrait.php line 103
<?php/** This file is part of the API Platform project.** (c) Kévin Dunglas <dunglas@gmail.com>** For the full copyright and license information, please view the LICENSE* file that was distributed with this source code.*/declare(strict_types=1);namespace ApiPlatform\Doctrine\Common\State;use ApiPlatform\Exception\OperationNotFoundException;use ApiPlatform\Exception\RuntimeException;use ApiPlatform\Metadata\GraphQl\Operation as GraphQlOperation;use ApiPlatform\Metadata\GraphQl\Query;use ApiPlatform\Metadata\HttpOperation;use ApiPlatform\Metadata\Link;use ApiPlatform\Metadata\Operation;use ApiPlatform\Metadata\Resource\Factory\ResourceMetadataCollectionFactoryInterface;trait LinksHandlerTrait{private ?ResourceMetadataCollectionFactoryInterface $resourceMetadataCollectionFactory;/*** @return Link[]*/private function getLinks(string $resourceClass, Operation $operation, array $context): array{$links = $this->getOperationLinks($operation);if (!($linkClass = $context['linkClass'] ?? false)) {return $links;}$newLink = null;$linkProperty = $context['linkProperty'] ?? null;foreach ($links as $link) {if ($linkClass === $link->getFromClass() && $linkProperty === $link->getFromProperty()) {$newLink = $link;break;}}if ($newLink) {return [$newLink];}if (!$this->resourceMetadataCollectionFactory) {return [];}// Using GraphQL, it's possible that we won't find a GraphQL Operation of the same type (e.g. it is disabled).try {$resourceMetadataCollection = $this->resourceMetadataCollectionFactory->create($linkClass);$linkedOperation = $resourceMetadataCollection->getOperation($operation->getName());} catch (OperationNotFoundException $e) {if (!$operation instanceof GraphQlOperation) {throw $e;}// Instead, we'll look for the first Query available.foreach ($resourceMetadataCollection as $resourceMetadata) {foreach ($resourceMetadata->getGraphQlOperations() as $op) {if ($op instanceof Query) {$linkedOperation = $op;}}}}foreach ($this->getOperationLinks($linkedOperation ?? null) as $link) {if ($resourceClass === $link->getToClass() && $linkProperty === $link->getFromProperty()) {$newLink = $link;break;}}if (!$newLink) {throw new RuntimeException(sprintf('The class "%s" cannot be retrieved from "%s".', $resourceClass, $linkClass));}return [$newLink];}private function getIdentifierValue(array &$identifiers, string $name = null): mixed{if (isset($identifiers[$name])) {$value = $identifiers[$name];unset($identifiers[$name]);return $value;}return array_shift($identifiers);}private function getOperationLinks(Operation $operation = null): array{if ($operation instanceof GraphQlOperation) {return $operation->getLinks() ?? [];}if ($operation instanceof HttpOperation) {return $operation->getUriVariables() ?? [];}return [];}}